In recognition of September being rail-safety month, Caltrain will unveil a series of new suicide prevention signs along a 10-mile corridor from Menlo Park to Mountain View. The signs, developed with help from mental health experts, will list the telephone number for the Youth and Family Enrichment Services Crisis Intervention Center.

Despite repeated attempts at prevention, the commuter rail line is the frequent site of suicides.

Monday’s unveiling of the new signs will take place at 10 a.m. at the agency’s Mountain View Station.